CN110684546B - Device and method for reducing sulfur dioxide emission in coke oven coal charging process - Google Patents
Device and method for reducing sulfur dioxide emission in coke oven coal charging process Download PDFInfo
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- CN110684546B CN110684546B CN201911059066.7A CN201911059066A CN110684546B CN 110684546 B CN110684546 B CN 110684546B CN 201911059066 A CN201911059066 A CN 201911059066A CN 110684546 B CN110684546 B CN 110684546B
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- air curtain
- coke
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- 239000000571 coke Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 32
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000003763 carbonization Methods 0.000 claims abstract description 96
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004939 coking Methods 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/005—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for charging coal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a device and a method for reducing sulfur dioxide emission in the coal charging process of a coke oven, wherein the device comprises air curtain devices respectively arranged at a machine side oven door and a coke side oven door; at least one side of the oven door of the oven side and the oven door frame of the oven side is provided with an air curtain air outlet along the height direction at one side facing the center of the carbonization chamber, and the air curtain is formed by blowing air out of the air curtain air outlet to completely separate the inner space of the carbonization chamber from the external atmospheric environment. According to the invention, the external air entering the carbonization chamber in the coke discharging process of the coke oven can be prevented or reduced, SO that the oxygen-free or oxygen-deficient environment in the carbonization chamber is maintained, SO 2 generated by burning the coal entering the oven and the oxygen remained in the carbonization chamber during coal charging is avoided, the pollution of exceeding standard discharge of SO 2 to the environment is avoided from the source, and the environmental protection level in the coking production process is improved.
Description
Technical Field
The invention relates to the technical field of coke oven smoke dust control, in particular to a device and a method for reducing sulfur dioxide emission in a coke oven coal charging process.
Background
During the process of charging coal into the coke oven, a great amount of smoke dust can be instantaneously generated in the carbonization chamber. The coke pushing operation of the carbonization chamber before coal loading causes the coke oven carbonization chamber to undergo the processes of door picking, coke pushing and furnace door closing, and the carbonization chamber is communicated with the atmosphere during the door picking and furnace door closing, so that the air outside the carbonization chamber can enter the carbonization chamber. When coal is charged into the carbonization chamber, the coal material and oxygen in air entering the carbonization chamber during the opening period of the carbonization chamber are subjected to combustion reaction, and because the coal material contains sulfur, a certain amount of SO 2 is generated during combustion, and part of generated SO 2 enters the coal-charging dust-removing system along with coal-charging smoke dust during coal charging, SO that the discharge port SO 2 of the coal-charging dust-removing system exceeds the relevant environmental protection standard limit value.
For SO 2 discharged by a coke oven coal-charging dust-removing system in the coal-charging process, the stable and efficient desulfurization of the smoke dust is inevitably difficult due to the instantaneous intermittence of the coal-charging smoke dust, and the construction and operation of a desulfurization facility require that enterprises invest certain funds to ensure. Thus, the best solution is to control the production of SO 2 from the source.
Disclosure of Invention
The invention provides a device and a method for reducing sulfur dioxide emission in the coal charging process of a coke oven, which can prevent or reduce the entry of external air into a carbonization chamber in the coke discharging process of the coke oven by arranging air curtain devices at a machine side oven door and a coke side oven door, thereby keeping the inside of the carbonization chamber to be an anaerobic or anoxic environment, avoiding SO 2 generated by burning the coal entering the oven and oxygen remained in the carbonization chamber during the coal charging process, avoiding the pollution of exceeding SO 2 emission to the environment from the source, and improving the environmental protection level in the coking production process.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
A device for reducing sulfur dioxide emission in the process of charging coal in a coke oven comprises an air curtain device which is respectively arranged at a machine side oven door and a coke side oven door; at least one side of the oven door of the oven side and the oven door frame of the oven side is provided with an air curtain air outlet along the height direction at one side facing the center of the carbonization chamber, and the air curtain is formed by blowing air out of the air curtain air outlet to completely separate the inner space of the carbonization chamber from the external atmospheric environment.
The side furnace door and the coke side furnace door are provided with air curtain air outlets, an air curtain air outlet box is embedded into the inner side of a corresponding side furnace door frame, and the outer edge line of the air curtain air outlet box is flush with the edge line of the corresponding part of the furnace door frame; an air curtain air outlet is formed in the side, facing the center of the carbonization chamber, of the air curtain air outlet box along the high direction, and an air box air inlet is formed in the other side of the air curtain air outlet box and is connected with the high-speed air generating device through an air inlet pipeline.
The opening shape of the air curtain air outlet is trapezoid, namely the width of the air curtain air outlet continuously changes from small to large from top to bottom.
The high-speed wind generating device consists of a fan and an air inlet pipeline, the fan is connected with a wind box air inlet of the air curtain air outlet box through the air inlet pipeline, and the fan is driven by a high-speed motor.
And a guide plate or an air curtain air inlet is arranged on a side furnace door frame of the machine side furnace door and the coke side furnace door, which are not provided with an air curtain air outlet.
The guide plates are arranged on the inner sides of the corresponding side furnace door frames and are symmetrically arranged along the central line of the carbonization chamber and the air curtain air outlet; the guide plate is integrally arranged in an inclined way, and one end of the guide plate, which faces the inside of the carbonization chamber, is inclined towards the center line of the carbonization chamber.
The air curtain air inlet is arranged on the air curtain air inlet box embedded in the inner side of the corresponding side furnace door frame, the air curtain air inlet is symmetrically arranged with the air curtain air outlet along the central line of the carbonization chamber, the shape of the air curtain air inlet is consistent with that of the air curtain air outlet, and the width of the air curtain air inlet is larger than or equal to that of the air curtain air outlet with the corresponding height.
The outer edge line of the air curtain air inlet box is flush with the edge line of the corresponding part of the furnace door frame; an air outlet of the air curtain air inlet box is arranged on the air curtain air inlet box and is connected with an external air collecting device or communicated with the external atmosphere through an air outlet pipeline.
A method for reducing sulfur dioxide emissions during charging of a coke oven, comprising the steps of:
1) The method comprises the steps that a side furnace door and a coke side furnace door of a coke oven carbonization chamber are taken off, a coke pusher and a coke blocking machine are positioned, and an air curtain device arranged on the side of the carbonization chamber is started before coke pushing operation is prepared;
2) In the process that coke in the carbonization chamber is pushed out of the carbonization chamber by the coke pusher, high-speed air flow generated by the high-speed air generating device is distributed by the air curtain air outlet box and then blown out by the air curtain air outlet, the high-speed air flow flows to the door frame at the other side along the direction vertical to the center line of the carbonization chamber and passes through the side furnace mouth of the carbonization chamber, an air curtain is formed on the whole open surface of the furnace mouth at the side, and the space inside the carbonization chamber is completely isolated from the outside of the carbonization chamber; after the high-speed air flow reaches the door frame of the furnace on the other side, the high-speed air flow flows outside the carbonization chamber, namely, in a direction away from the furnace opening on the machine side under the action of the guide plate; or the air enters the air curtain air outlet box through the air curtain air inlet and is guided out by the air box air outlet;
3) When the coke blocking machine finishes coke blocking operation, an air curtain device arranged on the coke side of the carbonization chamber is started, an air curtain is formed on the whole open face of the furnace mouth on the coke side, and the space inside the carbonization chamber is completely isolated from the outside of the carbonization chamber; the process and principle are the same as those of the step 2);
4) When the coke discharging operation is completed, the machine side furnace door and the coke side furnace door are reinstalled in place, so that the machine side and the coke side furnace openings of the carbonization chamber are closed, and then the air curtain devices of the machine side and the coke side of the carbonization chamber are closed.
Compared with the prior art, the invention has the beneficial effects that:
1) Because of the existence of the temperature difference between the inside and the outside of the carbonization chamber, a certain pressure difference gradient is formed on the plane of the furnace mouth along the height direction of the carbonization chamber, and the air curtain air outlet with gradually increased width from top to bottom is formed on the plane of the furnace mouth along the height direction of the carbonization chamber, the invention can effectively balance the pressure difference change formed by the temperature difference between the inside and the outside, prevent the outside air from entering the carbonization chamber and form an anaerobic or anoxic environment in the carbonization chamber, thereby avoiding SO 2 generated by burning the coal entering the furnace and the oxygen remained in the carbonization chamber during coal charging, solving the problem of exceeding SO 2 in the coal charging smoke dust from the source and discharging the polluted environment, and improving the environmental protection level of the coking production process;
2) The gas curtain is adopted to effectively isolate the carbonization chamber from the outside, so that the phenomenon that the temperature in the carbonization chamber is reduced due to the fact that furnace openings on two sides of the carbonization chamber are opened and external cold air enters the carbonization chamber in the coke discharging operation process can be avoided or reduced, the dissipation of effective heat of the coke oven is reduced, the energy efficiency of coke oven production is improved, brickwork in the carbonization chamber can be effectively protected, the service life of the brickwork is prolonged, and the leakage rate of the furnace wall of the carbonization chamber is reduced.
Drawings
Fig. 1 is a schematic structural view of an apparatus for reducing sulfur dioxide emissions during charging of coke ovens according to the present invention.
Fig. 2 is a schematic structural view of an apparatus for reducing sulfur dioxide emissions during charging of coke ovens according to the present invention.
Fig. 3 is A-A view of fig. 1.
In the figure: 1. carbonization chamber 2, furnace column 3, furnace door frame 4, protection board 5, air curtain air outlet box 6, guide plate 7, air curtain air inlet box 8, air curtain air outlet
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
As shown in fig. 1 and 2, the device for reducing sulfur dioxide emission in the coal charging process of the coke oven comprises air curtain devices respectively arranged at the side oven door and the coke side oven door; at least one side of the oven door of the oven and the oven door frame 3 of the oven door of the oven is provided with an air curtain air outlet 8 along the height direction at one side facing the center of the carbonization chamber 1, and the air curtain air outlet 8 blows air to form an air curtain to completely isolate the inner space of the carbonization chamber 1 from the external atmospheric environment.
The side furnace door and the coke side furnace door are provided with air curtain air outlets 8, the air curtain air outlet boxes 5 are embedded in the inner sides of the corresponding side furnace door frames 3, and the outer edge lines of the air curtain air outlet boxes 5 are flush with the edge lines of the corresponding parts of the furnace door frames 3; an air curtain air outlet 8 is formed in the side, facing the center of the carbonization chamber 1, of the air curtain air outlet box 5 along the height direction, and an air box air inlet is formed in the other side of the air curtain air outlet box 5 and is connected with a high-speed air generating device through an air inlet pipeline.
As shown in fig. 3, the opening of the air curtain air outlet 8 is trapezoidal, i.e. the opening width thereof continuously varies from small to large from top to bottom.
The high-speed wind generating device consists of a fan and an air inlet pipeline, the fan is connected with a wind box air inlet 8 of the air curtain air outlet box 5 through the air inlet pipeline, and the fan is driven by a high-speed motor.
And a guide plate 6 or an air curtain air inlet is arranged on a side furnace door frame 3 of the machine side furnace door and the coke side furnace door, which are not provided with an air curtain air outlet 8.
The guide plates 6 are arranged on the inner sides of the corresponding side furnace door frames 3 and symmetrically arranged along the central line of the carbonization chamber 1 and the air curtain air outlet 8; the guide plate 6 is arranged in an overall inclined way, and one end facing the inside of the carbonization chamber 1 is inclined towards the central line of the carbonization chamber 1.
The air curtain air inlet is arranged on an air curtain air inlet box 7 embedded in the inner side of the corresponding side furnace door frame 3, the air curtain air inlet is symmetrically arranged with an air curtain air outlet 8 along the central line of the carbonization chamber 1, the shape of the air curtain air inlet is consistent with that of the air curtain air outlet 8, and the width of the air curtain air inlet is greater than or equal to that of the air curtain air outlet 8 with the corresponding height.
The outer edge line of the air curtain air inlet box 7 is flush with the edge line of the corresponding part of the furnace door frame 3; an air outlet of the air curtain air inlet box 7 is connected with an external air collecting device or communicated with the external atmosphere through an air outlet pipeline.
A method for reducing sulfur dioxide emissions during charging of a coke oven, comprising the steps of:
1) The method comprises the steps that a side furnace door and a coke side furnace door of a coke oven carbonization chamber 1 are taken off, a coke pusher and a coke blocking machine are positioned, and an air curtain device arranged on the side of the carbonization chamber 1 is started before coke pushing operation is prepared;
2) In the process that coke in the carbonization chamber 1 is pushed out of the carbonization chamber 1 by the coke pusher, high-speed air flow generated by a high-speed air generating device is distributed by an air curtain air outlet box 5 and then blown out by an air curtain air outlet 8, the high-speed air flow flows to the other side furnace door frame 3 along the direction vertical to the central line of the carbonization chamber 1 through the side furnace mouth of the carbonization chamber 1, and an air curtain is formed on the whole open surface of the side furnace mouth, so that the inner space of the carbonization chamber 1 is completely isolated from the outside of the carbonization chamber 1; after the high-speed air flow reaches the furnace door frame 3 at the other side, the high-speed air flow flows out of the carbonization chamber 1, namely, in a direction away from the furnace mouth at the machine side under the action of the guide plate 6; or enters the air curtain air outlet box 7 through the air curtain air inlet and is guided out by the air box air outlet;
3) When the coke blocking machine finishes coke blocking operation, an air curtain device arranged on the coke side of the carbonization chamber 1 is started, an air curtain is formed on the whole open face of the furnace mouth on the coke side, and the inner space of the carbonization chamber 1 is completely isolated from the outside of the carbonization chamber 1; the process and principle are the same as those of the step 2);
4) When the coke discharging operation is completed, the machine side furnace door and the coke side furnace door are reinstalled in place, so that the machine side and the coke side furnace openings of the carbonization chamber 1 are closed, and then the air curtain devices of the machine side and the coke side of the carbonization chamber 1 are closed.
The two sides of the coke oven carbonization chamber are respectively provided with a machine side furnace door and a coke side furnace door, the machine side furnace door or the coke side furnace door is respectively arranged on a furnace door frame at the corresponding side, the inner side of the furnace door frame is fixedly connected with a furnace column, and the outer side of the furnace door frame is provided with a protection plate. In the invention, an air curtain air outlet box 5, an air curtain air inlet box 7 and a guide plate 6 are embedded on a corresponding furnace door frame 3, the guide plate 6 is used for guiding the gas sprayed out of an air curtain air outlet 8 from a carbonization chamber 1 to prevent the gas from entering the inside of the carbonization chamber 1, and the air curtain air inlet box 7 is used for collecting the gas sprayed out of the air curtain air outlet 8 through an air curtain air inlet and guiding the gas into an external gas collecting device for recycling after treatment or directly discharging the gas into the atmosphere.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. The device for reducing the sulfur dioxide emission in the coal charging process of the coke oven is characterized by comprising air curtain devices respectively arranged at the side oven door and the coke side oven door; an air curtain air outlet is arranged on one side of the side oven door of the coke oven and one side oven door frame of the side oven door of the coke oven towards the center of the carbonization chamber along the height direction, and air is blown out from the air curtain air outlet to form an air curtain to completely isolate the inner space of the carbonization chamber from the external atmospheric environment; the side furnace door and the coke side furnace door are provided with air curtain air outlets, an air curtain air outlet box is embedded into the inner side of a corresponding side furnace door frame, and the outer edge line of the air curtain air outlet box is flush with the edge line of the corresponding part of the furnace door frame; an air curtain air outlet is formed in the high direction on one side of the air curtain air outlet box, which faces the center of the carbonization chamber, an air box air inlet is formed in the other side of the air curtain air outlet box, and the air box air inlet is connected with a high-speed air generating device through an air inlet pipeline; the opening shape of the air curtain air outlet is trapezoid, namely the opening width of the air curtain air outlet continuously changes from small to large from top to bottom; the high-speed wind generating device consists of a fan and an air inlet pipeline, the fan is connected with a wind box air inlet of the air curtain air outlet box through the air inlet pipeline, and the fan is driven by a high-speed motor; a side furnace door frame of the side furnace door, which is not provided with an air curtain air outlet, is provided with a guide plate or an air curtain air inlet; the guide plates are arranged on the inner sides of the corresponding side furnace door frames and are symmetrically arranged along the central line of the carbonization chamber and the air curtain air outlet; the guide plate is integrally arranged in an inclined way, and one end of the guide plate, which faces the inside of the carbonization chamber, is inclined towards the center line of the carbonization chamber; the air curtain air inlets are arranged on air curtain air inlet boxes embedded in the inner sides of the corresponding side furnace door frames, the air curtain air inlets are symmetrically arranged with the air curtain air outlets along the central line of the carbonization chamber, the shape of the air curtain air inlets is consistent with that of the air curtain air outlets, and the width of the air curtain air inlets is larger than or equal to that of air curtain air outlets with corresponding heights; the outer edge line of the air curtain air inlet box is flush with the edge line of the corresponding part of the furnace door frame; an air outlet of the air curtain air inlet box is arranged on the air curtain air inlet box and is connected with an external air collecting device or communicated with the external atmosphere through an air outlet pipeline.
2. A method for reducing sulfur dioxide emissions during coke oven coal charging based on the apparatus of claim 1, comprising the steps of:
1) The method comprises the steps that a side furnace door and a coke side furnace door of a coke oven carbonization chamber are taken off, a coke pusher and a coke blocking machine are positioned, and an air curtain device arranged on the side of the carbonization chamber is started before coke pushing operation is prepared;
2) In the process that coke in the carbonization chamber is pushed out of the carbonization chamber by the coke pusher, high-speed air flow generated by the high-speed air generating device is distributed by the air curtain air outlet box and then blown out by the air curtain air outlet, the high-speed air flow flows to the door frame at the other side along the direction vertical to the center line of the carbonization chamber and passes through the side furnace mouth of the carbonization chamber, an air curtain is formed on the whole open surface of the furnace mouth at the side, and the space inside the carbonization chamber is completely isolated from the outside of the carbonization chamber; after the high-speed air flow reaches the door frame of the furnace on the other side, the high-speed air flow flows outside the carbonization chamber, namely, in a direction away from the furnace opening on the machine side under the action of the guide plate; or the air enters the air curtain air outlet box through the air curtain air inlet and is guided out by the air box air outlet;
3) When the coke blocking machine finishes coke blocking operation, an air curtain device arranged on the coke side of the carbonization chamber is started, an air curtain is formed on the whole open face of the furnace mouth on the coke side, and the space inside the carbonization chamber is completely isolated from the outside of the carbonization chamber; the process and principle are the same as those of the step 2);
4) When the coke discharging operation is completed, the machine side furnace door and the coke side furnace door are reinstalled in place, so that the machine side and the coke side furnace openings of the carbonization chamber are closed, and then the air curtain devices of the machine side and the coke side of the carbonization chamber are closed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059066.7A CN110684546B (en) | 2019-11-01 | 2019-11-01 | Device and method for reducing sulfur dioxide emission in coke oven coal charging process |
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| CN201911059066.7A CN110684546B (en) | 2019-11-01 | 2019-11-01 | Device and method for reducing sulfur dioxide emission in coke oven coal charging process |
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| CN110684546A CN110684546A (en) | 2020-01-14 |
| CN110684546B true CN110684546B (en) | 2024-06-07 |
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